A.检查产品合格证 B.产品性能检测报告 C.计量措施 D.检查隐蔽工程验收记录
A.10~30mm B.20~40mm C.30~50mm D.40~60mm
A.200mm B.400mm C.500mm D.1000mm
A.0℃B.5℃C.10℃D.15℃